Latest Elitmus Aptitude Question SOLUTION: what should be the minimum no of student in a class room in which 25% student score 75 marks,10% student score 85 marks,15 % student score less than 50 marks, 25% score 60 marks an

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(#M40151482) ELITMUS Numerical Ability question number system Keep an EYE

what should be the minimum no of student in a class room in which 25% student score 75 marks,10% student score 85 marks,15 % student score less than 50 marks, 25% score 60 marks and remaining student score more than 90 marks..
option:
A-100
B-80
C-70
D-None of these

Asked In Elitmus Dhananjay (9 years ago)

Unsolved Read Solution (4)

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MR. X  (9 years ago)

75 MARKS------------------------------->25%
80 MARKS------------------------------->10%
50 MARKS(LESS THAN)-------------->15%
60 MARKS------------------------------->25%
90 MARKS(REMAINING)------------>25%

RATIO=(25x:10x:15x:25x:25x)=(5x:2x:3x:5x:5x)

ADDING ALL WE GET 20x (PUT x=1)(FOR MINIMUM NO. OF STUDENTS)
=20 ANS
THEREFORE D)NONE OF THESE

Is this solution Helpfull? Yes (17) | No (2)  

Kola Yekanth  (9 years ago)

90 marks =>100-(25+10+15+25) =100-75 =25
=> H.C.F of 25,10,15,25,25 is 5
=> dividing every % of students Categery with H.C.F,
=> Total Students= 5+2+3+5+5= 20

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tushar varshney  (9 years ago)

75 MARKS------------------------------->25%
80 MARKS------------------------------->10%
50 MARKS(LESS THAN)-------------->15%
60 MARKS------------------------------->25%
90 MARKS(REMAINING)------------>25%

No of student who score marks(355)=(25x+10x+15x+25x+25x)

ADDING ALL WE GET 20x (PUT x=1)(FOR MINIMUM NO. OF STUDENTS)
100

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Kamal Chaturvedi  (9 years ago)

20 i.e lcm of 4, 10 and 20

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